Advanced Photon Source

An Office of Science National User Facility

John Freeland

Contact Information
Argonne National Laboratory
9700 S. Cass Ave
431/E004
Argonne, Il 60439

Phone: 252-9614 | Fax: 252-7392

E-Mail: freeland@aps.anl.gov

Education/Experience
  • 1998 - present: Staff Scientist, Advanced Photon Source, Argonne National Laboratory, Argonne, IL
  • 2001 - present: Adjunct Faculty, Department of Physics, Northern Illinois University
  • 1996 - 1998: National Research Council (NRC) Fellow Naval Research Laboratory
  • The Johns Hopkins University; Ph. D in Physics, 1996
  • Beloit College, Beloit, WI; B.S. in Physics, 1990
Research Interests
  • Understanding the magnetic and electronic properties of complex oxides both in the bulk and at surfaces and interfaces.
Selected Publications
  • V. Rose, J. W. Freeland, K. E. Gray, and S.K. Streiffer, “X-ray-excited photoelectron detection using a scanning tunneling microscope”, Appl. Phys. Lett. 92, 193510 (2008).
  • J. Chakahlian, J.W. Freeland, H.-U. Habermeir, G. Cristaini, G. Khaliullin, M. van Veennedall, and B. Keimer,Orbital Reconstruction and Covalent Bonding at an Oxide Interface” , Science 318,1114 (2007).
  • J. Chakalian, J. W. Freeland, G. Srajer, J. Strempfer, G. Khaliullin, J.C. Cezar, T. Charlton, R. Dalgliesh, C. Bernhard, G. Cristiani, H-U. Habermeier and B. Keimer, "Magnetism at the Interface Between Ferromagnetic and Superconducting Oxides", Nature Physics 2, 244 (2006).
  • J. W. Freeland, K.E. Gray, L. Ozyuzer, P. Berghuis, E. Badica, J. Kavich, H. Zheng, and J. F. Mitchell, "Full Bulk Spin Polarization and Intrinsic Tunnel Barriers at the Surface of Layered Manganites", Nature Materials 4, 62 (2005).
  • J. W. Freeland, R. H. Kodama, M. Vedpathak, S.C. Erwin, D.J. Keavney, R. Winarski, P. Ryan, and R.A. Rosenberg, "Induced Ge Spin Polarization at the Fe/Ge Interface", Phys. Rev. B 70, 033201 (2004).
  • J.W. Freeland, D.J. Keavney, R. Winarski, P. Ryan, J.M. Slaughter, R.W. Dave, and J. Janesky, "Grain Boundary Mediated Oxidation and Interlayer Dipolar Coupling in a Magnetic Tunnel Junction Structure", Phys. Rev. B 67, 134411 (2003).
  • D.J. Keavney, D.Wu, J.W. Freeland, E. Johnston-Halperin, D.D. Awschalom, and J. Shi, "Element Resolved Spin Configuration in Ferromagnetic Manganese-Doped Gallium Arsenide", Phys. Rev. Lett. 91, 187203 (2003).
  • L.Seve, W. Zhu, B. Sinkovic, J.W. Freeland, I Coulthard, W.J. Antel Jr., and S.S.P Parkin, "Observation of Change in the Oxidation State at Ferromagnet/Insulator Interface Upon Thermal Annealing", Euro. Phys. Lett. 55, 439, (2001).
  • J.W. Freeland, I. Coulthard, W.J. Antel Jr, and A.P.J. Stampfl, "Interface Bonding for Fe Thin Films on GaAs Surfaces of Differing Morphology”, Phys. Rev. B. 63,193301, (2001).
  • J.W. Freeland, K. Bussmann, Y. U. Idzerda, "Connecting Disorder and Magnetic Properties in CoFe Thin Films", Appl. Phys. Lett., 76, 2603, (2000).
  • J.W. Freeland, K. Bussmann, Y.U. Idzerda, and C.-C. Kao, "Understanding Correlations Between Chemical and Magnetic Interfacial Roughness", Phys. Rev. B 60, R9923 (1999).